* Refactor addons into multiple packages ([#50214](https://github.com/kubernetes/kubernetes/pull/50214), [@andrewrynhard](https://github.com/andrewrynhard))
* Kubelet now manages `/etc/hosts` file for both hostNetwork Pods and non-hostNetwork Pods. ([#49140](https://github.com/kubernetes/kubernetes/pull/49140), [@rickypai](https://github.com/rickypai))

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## Changes by Kind

### Bug or Regression

- CVE-2020-8557 (Medium): Node-local denial of service via container /etc/hosts file. See https://github.com/kubernetes/kubernetes/issues/93032 for more details. ([#92916](https://github.com/kubernetes/kubernetes/pull/92916), [@joelsmith](https://github.com/joelsmith)) [SIG Node]

the Program in a commercial product offering, such Contributor
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other Contributor ("Indemnified Contributor") against any losses,
damages and costs (collectively "Losses") arising from claims, lawsuits
and other legal actions brought by a third party against the Indemnified
Contributor to the extent caused by the acts or omissions of such

- CVE-2020-8557 (Medium): Node-local denial of service via container /etc/hosts file. See https://github.com/kubernetes/kubernetes/issues/93032 for more details. ([#92916](https://github.com/kubernetes/kubernetes/pull/92916), [@joelsmith](https://github.com/joelsmith)) [SIG Node]

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## Changelog since v1.15.5

### Other notable changes

* Fix kubelet metrics gathering on non-English Windows hosts ([#84156](https://github.com/kubernetes/kubernetes/pull/84156), [@wawa0210](https://github.com/wawa0210))

- Service Controller: update load balancer hosts after node's ProviderID is updated ([#121138](https://github.com/kubernetes/kubernetes/pull/121138), [@code-elinka](https://github.com/code-elinka)) [SIG Cloud Provider, Network, Release and Testing]

## Dependencies

- Avoid propagating hosts' `search .` into containers' `/etc/resolv.conf` ([#112204](https://github.com/kubernetes/kubernetes/pull/112204), [@lucab](https://github.com/lucab)) [SIG Network and Node]

- CVE-2020-8557 (Medium): Node-local denial of service via container /etc/hosts file. See https://github.com/kubernetes/kubernetes/issues/93032 for more details. ([#92916](https://github.com/kubernetes/kubernetes/pull/92916), [@joelsmith](https://github.com/joelsmith)) [SIG Node]